cannam@94: /*
cannam@94:  *  Copyright (C) 2004 Steve Harris
cannam@94:  *
cannam@94:  *  This program is free software; you can redistribute it and/or
cannam@94:  *  modify it under the terms of the GNU Lesser General Public License
cannam@94:  *  as published by the Free Software Foundation; either version 2.1
cannam@94:  *  of the License, or (at your option) any later version.
cannam@94:  *
cannam@94:  *  This program is distributed in the hope that it will be useful,
cannam@94:  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
cannam@94:  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
cannam@94:  *  GNU Lesser General Public License for more details.
cannam@94:  *
cannam@94:  *  $Id$
cannam@94:  */
cannam@94: 
cannam@94: #ifndef LO_ENDIAN_H
cannam@94: #define LO_ENDIAN_H
cannam@94: 
cannam@94: #include <sys/types.h>
cannam@94: #include <stdint.h>
cannam@94: 
cannam@94: #ifdef WIN32
cannam@94: #include <winsock2.h>
cannam@94: #include <ws2tcpip.h>
cannam@94: #else
cannam@94: #include <netinet/in.h>
cannam@94: #endif
cannam@94: 
cannam@94: #ifdef __cplusplus
cannam@94: extern "C" {
cannam@94: #endif
cannam@94: 
cannam@94: #define lo_swap16(x) htons(x)
cannam@94: 
cannam@94: #define lo_swap32(x) htonl(x)
cannam@94: 
cannam@94: /* These macros come from the Linux kernel */
cannam@94: 
cannam@94: #ifndef lo_swap16
cannam@94: #define lo_swap16(x) \
cannam@94: ({ \
cannam@94:     uint16_t __x = (x); \
cannam@94:     ((uint16_t)( \
cannam@94: 	(((uint16_t)(__x) & (uint16_t)0x00ffU) << 8) | \
cannam@94: 	(((uint16_t)(__x) & (uint16_t)0xff00U) >> 8) )); \
cannam@94: })
cannam@94: #warning USING UNOPTIMISED ENDIAN STUFF
cannam@94: #endif
cannam@94: 
cannam@94: #ifndef lo_swap32
cannam@94: #define lo_swap32(x) \
cannam@94: ({ \
cannam@94:     uint32_t __x = (x); \
cannam@94:     ((uint32_t)( \
cannam@94: 	(((uint32_t)(__x) & (uint32_t)0x000000ffUL) << 24) | \
cannam@94: 	(((uint32_t)(__x) & (uint32_t)0x0000ff00UL) <<  8) | \
cannam@94: 	(((uint32_t)(__x) & (uint32_t)0x00ff0000UL) >>  8) | \
cannam@94: 	(((uint32_t)(__x) & (uint32_t)0xff000000UL) >> 24) )); \
cannam@94: })
cannam@94: #endif
cannam@94: 
cannam@94: #if 0
cannam@94: #ifndef lo_swap64
cannam@94: #define lo_swap64(x) \
cannam@94: ({ \
cannam@94:     uint64_t __x = (x); \
cannam@94:     ((uint64_t)( \
cannam@94: 	(uint64_t)(((uint64_t)(__x) & (uint64_t)0x00000000000000ffULL) << 56) | \
cannam@94: 	(uint64_t)(((uint64_t)(__x) & (uint64_t)0x000000000000ff00ULL) << 40) | \
cannam@94: 	(uint64_t)(((uint64_t)(__x) & (uint64_t)0x0000000000ff0000ULL) << 24) | \
cannam@94: 	(uint64_t)(((uint64_t)(__x) & (uint64_t)0x00000000ff000000ULL) <<  8) | \
cannam@94: 	(uint64_t)(((uint64_t)(__x) & (uint64_t)0x000000ff00000000ULL) >>  8) | \
cannam@94: 	(uint64_t)(((uint64_t)(__x) & (uint64_t)0x0000ff0000000000ULL) >> 24) | \
cannam@94: 	(uint64_t)(((uint64_t)(__x) & (uint64_t)0x00ff000000000000ULL) >> 40) | \
cannam@94: 	(uint64_t)(((uint64_t)(__x) & (uint64_t)0xff00000000000000ULL) >> 56) )); \
cannam@94: })
cannam@94: #endif
cannam@94: #else
cannam@94: 
cannam@94: typedef union {
cannam@94:     uint64_t all;
cannam@94:     struct {
cannam@94: 	uint32_t a;
cannam@94: 	uint32_t b;
cannam@94:     } part;
cannam@94: } lo_split64;
cannam@94: 
cannam@94: static inline uint64_t lo_swap64(uint64_t x)
cannam@94: {
cannam@94:     lo_split64 in, out;
cannam@94: 
cannam@94:     in.all = x;
cannam@94:     out.part.a = lo_swap32(in.part.b);
cannam@94:     out.part.b = lo_swap32(in.part.a);
cannam@94: 
cannam@94:     return out.all;
cannam@94: }
cannam@94: #endif
cannam@94: 
cannam@94: /* Host to OSC and OSC to Host conversion macros */
cannam@94: 
cannam@94: #if 0
cannam@94: #define lo_htoo16(x) (x)
cannam@94: #define lo_htoo32(x) (x)
cannam@94: #define lo_htoo64(x) (x)
cannam@94: #define lo_otoh16(x) (x)
cannam@94: #define lo_otoh32(x) (x)
cannam@94: #define lo_otoh64(x) (x)
cannam@94: #else
cannam@94: #define lo_htoo16 lo_swap16
cannam@94: #define lo_htoo32 lo_swap32
cannam@94: #define lo_htoo64 lo_swap64
cannam@94: #define lo_otoh16 lo_swap16
cannam@94: #define lo_otoh32 lo_swap32
cannam@94: #define lo_otoh64 lo_swap64
cannam@94: #endif
cannam@94: 
cannam@94: #ifdef __cplusplus
cannam@94: }
cannam@94: #endif
cannam@94: 
cannam@94: #endif
cannam@94: 
cannam@94: /* vi:set ts=8 sts=4 sw=4: */